build-git-installers.yml

name: build-git-installers

on:
  push:
    tags:
      - 'v[0-9]*vfs*' # matches "v<number><any characters>vfs<any characters>"

permissions:
  id-token: write # required for Azure login via OIDC

jobs:
  # Check prerequisites for the workflow
  prereqs:
    runs-on: ubuntu-latest
    environment: release
    outputs:
      tag_name: ${{ steps.tag.outputs.name }}           # The full name of the tag, e.g. v2.32.0.vfs.0.0
      tag_version: ${{ steps.tag.outputs.version }}     # The version number (without preceding "v"), e.g. 2.32.0.vfs.0.0
    steps:
      - name: Validate tag
        run: |
          echo "$GITHUB_REF" |
          grep -E '^refs/tags/v2\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.vfs\.0\.(0|[1-9][0-9]*)(\.rc[0-9])?$' || {
            echo "::error::${GITHUB_REF#refs/tags/} is not of the form v2.<X>.<Y>.vfs.0.<W>[.rc<N>]" >&2
            exit 1
          }
      - name: Determine tag to build
        run: |
          echo "name=${GITHUB_REF#refs/tags/}" >>$GITHUB_OUTPUT
          echo "version=${GITHUB_REF#refs/tags/v}" >>$GITHUB_OUTPUT
        id: tag
      - name: Clone git
        uses: actions/checkout@v4
      - name: Validate the tag identified with trigger
        run: |
          die () {
            echo "::error::$*" >&2
            exit 1
          }

          # `actions/checkout` only downloads the peeled tag (i.e. the commit)
          git fetch origin +$GITHUB_REF:$GITHUB_REF

          # Verify that the tag is annotated
          test $(git cat-file -t "$GITHUB_REF") == "tag" || die "Tag ${{ steps.tag.outputs.name }} is not annotated"

          # Verify tag follows rules in GIT-VERSION-GEN (i.e., matches the specified "DEF_VER" in
          # GIT-VERSION-FILE) and matches tag determined from trigger
          make GIT-VERSION-FILE
          test "${{ steps.tag.outputs.version }}" == "$(sed -n 's/^GIT_VERSION = //p'< GIT-VERSION-FILE)" || die "GIT-VERSION-FILE tag does not match ${{ steps.tag.outputs.name }}"
  # End check prerequisites for the workflow

  # Build Windows installers (x86_64 installer & portable)
  windows_pkg:
    runs-on: windows-2019
    environment: release
    needs: prereqs
    env:
      GPG_OPTIONS: "--batch --yes --no-tty --list-options no-show-photos --verify-options no-show-photos --pinentry-mode loopback"
      HOME: "${{github.workspace}}\\home"
      USERPROFILE: "${{github.workspace}}\\home"
    steps:
      - name: Configure user
        shell: bash
        run:
          USER_NAME="${{github.actor}}" &&
          USER_EMAIL="${{github.actor}}@users.noreply.github.com" &&
          mkdir -p "$HOME" &&
          git config --global user.name "$USER_NAME" &&
          git config --global user.email "$USER_EMAIL" &&
          echo "PACKAGER=$USER_NAME <$USER_EMAIL>" >>$GITHUB_ENV
      - uses: git-for-windows/setup-git-for-windows-sdk@v1
        with:
          flavor: build-installers
      - name: Clone build-extra
        shell: bash
        run: |
          git clone --filter=blob:none --single-branch -b main https://github.com/git-for-windows/build-extra /usr/src/build-extra
      - name: Clone git
        shell: bash
        run: |
          # Since we cannot directly clone a specified tag (as we would a branch with `git clone -b <branch name>`),
          # this clone has to be done manually (via init->fetch->reset).

          tag_name="${{ needs.prereqs.outputs.tag_name }}" &&
          git -c init.defaultBranch=main init &&
          git remote add -f origin https://github.com/git-for-windows/git &&
          git fetch "https://github.com/${{github.repository}}" refs/tags/${tag_name}:refs/tags/${tag_name} &&
          git reset --hard ${tag_name}
      - name: Prepare home directory for code-signing
        env:
          CODESIGN_P12: ${{secrets.CODESIGN_P12}}
          CODESIGN_PASS: ${{secrets.CODESIGN_PASS}}
        if: env.CODESIGN_P12 != '' && env.CODESIGN_PASS != ''
        shell: bash
        run: |
          cd home &&
          mkdir -p .sig &&
          echo -n "$CODESIGN_P12" | tr % '\n' | base64 -d >.sig/codesign.p12 &&
          echo -n "$CODESIGN_PASS" >.sig/codesign.pass
          git config --global alias.signtool '!sh "/usr/src/build-extra/signtool.sh"'
      - name: Prepare home directory for GPG signing
        if: env.GPGKEY != ''
        shell: bash
        run: |
          # This section ensures that the identity for the GPG key matches the git user identity, otherwise
          # signing will fail

          echo '${{secrets.PRIVGPGKEY}}' | tr % '\n' | gpg $GPG_OPTIONS --import &&
          info="$(gpg --list-keys --with-colons "${GPGKEY%% *}" | cut -d : -f 1,10 | sed -n '/^uid/{s|uid:||p;q}')" &&
          git config --global user.name "${info% <*}" &&
          git config --global user.email "<${info#*<}"
        env:
          GPGKEY: ${{secrets.GPGKEY}}
      - name: Build mingw-w64-x86_64-git
        env:
          GPGKEY: "${{secrets.GPGKEY}}"
        shell: bash
        run: |
          set -x

          # Make sure that there is a `/usr/bin/git` that can be used by `makepkg-mingw`
          printf '#!/bin/sh\n\nexec /mingw64/bin/git.exe "$@"\n' >/usr/bin/git &&

          # Restrict `PATH` to MSYS2 and to Visual Studio (to let `cv2pdb` find the relevant DLLs)
          PATH="/mingw64/bin:/usr/bin:/C/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/amd64:/C/Windows/system32"

          type -p mspdb140.dll || exit 1

          sh -x /usr/src/build-extra/please.sh build-mingw-w64-git --only-64-bit --build-src-pkg -o artifacts HEAD &&
          if test -n "$GPGKEY"
          then
            for tar in artifacts/*.tar*
            do
              /usr/src/build-extra/gnupg-with-gpgkey.sh --detach-sign --no-armor $tar
            done
          fi &&

          b=$PWD/artifacts &&
          version=${{ needs.prereqs.outputs.tag_name }} &&
          (cd /usr/src/MINGW-packages/mingw-w64-git &&
          cp PKGBUILD.$version PKGBUILD &&
          git commit -s -m "mingw-w64-git: new version ($version)" PKGBUILD &&
          git bundle create "$b"/MINGW-packages.bundle origin/main..main)
      - name: Publish mingw-w64-x86_64-git
        uses: actions/upload-artifact@v3
        with:
          name: pkg-x86_64
          path: artifacts
  windows_artifacts:
    runs-on: windows-2019
    environment: release
    needs: [prereqs, windows_pkg]
    env:
      HOME: "${{github.workspace}}\\home"
    strategy:
      matrix:
        artifact:
          - name: installer
            fileprefix: Git
          - name: portable
            fileprefix: PortableGit
      fail-fast: false
    steps:
      - name: Download pkg-x86_64
        uses: actions/download-artifact@v3
        with:
          name: pkg-x86_64
          path: pkg-x86_64
      - uses: git-for-windows/setup-git-for-windows-sdk@v1
        with:
          flavor: build-installers
      - name: Clone build-extra
        shell: bash
        run: |
          git clone --filter=blob:none --single-branch -b main https://github.com/git-for-windows/build-extra /usr/src/build-extra
      - name: Prepare home directory for code-signing
        env:
          CODESIGN_P12: ${{secrets.CODESIGN_P12}}
          CODESIGN_PASS: ${{secrets.CODESIGN_PASS}}
        if: env.CODESIGN_P12 != '' && env.CODESIGN_PASS != ''
        shell: bash
        run: |
          mkdir -p home/.sig &&
          echo -n "$CODESIGN_P12" | tr % '\n' | base64 -d >home/.sig/codesign.p12 &&
          echo -n "$CODESIGN_PASS" >home/.sig/codesign.pass &&
          git config --global alias.signtool '!sh "/usr/src/build-extra/signtool.sh"'
      - name: Retarget auto-update to microsoft/git
        shell: bash
        run: |
          set -x

          b=/usr/src/build-extra &&

          filename=$b/git-update-git-for-windows.config
          tr % '\t' >$filename <<-\EOF &&
          [update]
          %fromFork = microsoft/git
          EOF

          sed -i -e '/^#include "file-list.iss"/a\
          Source: {#SourcePath}\\..\\git-update-git-for-windows.config; DestDir: {app}\\mingw64\\bin; Flags: replacesameversion; AfterInstall: DeleteFromVirtualStore' \
            -e '/^Type: dirifempty; Name: {app}\\{#MINGW_BITNESS}$/i\
          Type: files; Name: {app}\\{#MINGW_BITNESS}\\bin\\git-update-git-for-windows.config\
          Type: dirifempty; Name: {app}\\{#MINGW_BITNESS}\\bin' \
            $b/installer/install.iss
      - name: Set alerts to continue until upgrade is taken
        shell: bash
        run: |
          set -x

          b=/mingw64/bin &&

          sed -i -e '6 a use_recently_seen=no' \
            $b/git-update-git-for-windows
      - name: Set the installer Publisher to the Git Fundamentals team
        shell: bash
        run: |
          b=/usr/src/build-extra &&
          sed -i -e 's/^\(AppPublisher=\).*/\1The Git Fundamentals Team at GitHub/' $b/installer/install.iss
      - name: Let the installer configure Visual Studio to use the installed Git
        shell: bash
        run: |
          set -x

          b=/usr/src/build-extra &&

          sed -i -e '/^ *InstallAutoUpdater();$/a\
              CustomPostInstall();' \
            -e '/^ *UninstallAutoUpdater();$/a\
              CustomPostUninstall();' \
            $b/installer/install.iss &&

          cat >>$b/installer/helpers.inc.iss <<\EOF

          procedure CustomPostInstall();
          begin
              if not RegWriteStringValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\15.0\TeamFoundation\GitSourceControl','GitPath',ExpandConstant('{app}')) or
                not RegWriteStringValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\16.0\TeamFoundation\GitSourceControl','GitPath',ExpandConstant('{app}')) or
                not RegWriteStringValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\17.0\TeamFoundation\GitSourceControl','GitPath',ExpandConstant('{app}')) or
                not RegWriteStringValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\18.0\TeamFoundation\GitSourceControl','GitPath',ExpandConstant('{app}')) or
                not RegWriteStringValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\19.0\TeamFoundation\GitSourceControl','GitPath',ExpandConstant('{app}')) or
                not RegWriteStringValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\20.0\TeamFoundation\GitSourceControl','GitPath',ExpandConstant('{app}')) then
                  LogError('Could not register TeamFoundation\GitSourceControl');
          end;

          procedure CustomPostUninstall();
          begin
              if not RegDeleteValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\15.0\TeamFoundation\GitSourceControl','GitPath') or
                not RegDeleteValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\16.0\TeamFoundation\GitSourceControl','GitPath') or
                not RegDeleteValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\17.0\TeamFoundation\GitSourceControl','GitPath') or
                not RegDeleteValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\18.0\TeamFoundation\GitSourceControl','GitPath') or
                not RegDeleteValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\19.0\TeamFoundation\GitSourceControl','GitPath') or
                not RegDeleteValue(HKEY_CURRENT_USER,'Software\Microsoft\VSCommon\20.0\TeamFoundation\GitSourceControl','GitPath') then
                  LogError('Could not register TeamFoundation\GitSourceControl');
          end;
          EOF
      - name: Enable Scalar/C and the auto-updater in the installer by default
        shell: bash
        run: |
          set -x

          b=/usr/src/build-extra &&

          sed -i -e "/ChosenOptions:=''/a\\
              if (ExpandConstant('{param:components|/}')='/') then begin\n\
                  WizardSelectComponents('autoupdate');\n\
          #ifdef WITH_SCALAR\n\
                  WizardSelectComponents('scalar');\n\
          #endif\n\
              end;" $b/installer/install.iss
      - name: Build 64-bit ${{matrix.artifact.name}}
        shell: bash
        run: |
          set -x

          # Copy the PDB archive to the directory where `--include-pdbs` expects it
          b=/usr/src/build-extra &&
          mkdir -p $b/cached-source-packages &&
          cp pkg-x86_64/*-pdb* $b/cached-source-packages/ &&

          # Build the installer, embedding PDBs
          eval $b/please.sh make_installers_from_mingw_w64_git --include-pdbs \
              --version=${{ needs.prereqs.outputs.tag_version }} \
              -o artifacts --${{matrix.artifact.name}} \
              --pkg=pkg-x86_64/mingw-w64-x86_64-git-[0-9]*.tar.xz \
              --pkg=pkg-x86_64/mingw-w64-x86_64-git-doc-html-[0-9]*.tar.xz &&

          if test portable = '${{matrix.artifact.name}}' && test -n "$(git config alias.signtool)"
          then
            git signtool artifacts/PortableGit-*.exe
          fi &&
          openssl dgst -sha256 artifacts/${{matrix.artifact.fileprefix}}-*.exe | sed "s/.* //" >artifacts/sha-256.txt
      - name: Verify that .exe files are code-signed
        if: env.CODESIGN_P12 != '' && env.CODESIGN_PASS != ''
        shell: bash
        run: |
          PATH=$PATH:"/c/Program Files (x86)/Windows Kits/10/App Certification Kit/" \
          signtool verify //pa artifacts/${{matrix.artifact.fileprefix}}-*.exe
      - name: Publish ${{matrix.artifact.name}}-x86_64
        uses: actions/upload-artifact@v3
        with:
          name: win-${{matrix.artifact.name}}-x86_64
          path: artifacts
  # End build Windows installers

  # Build and sign Mac OSX installers & upload artifacts
  create-macos-artifacts:
    strategy:
      matrix:
        arch:
          - name: arm64
            runner: macos-latest-xl-arm64
    runs-on: ${{ matrix.arch.runner }}
    needs: prereqs
    env:
      VERSION: "${{ needs.prereqs.outputs.tag_version }}"
    environment: release
    steps:
      - name: Check out repository
        uses: actions/checkout@v3
        with:
          path: 'git'

      - name: Install Git dependencies
        run: |
          set -ex

          # Install x86_64 packages
          arch -x86_64 /bin/bash -c "$(curl -fsSL https://github.com/raw/Homebrew/install/HEAD/install.sh)"
          arch -x86_64 /usr/local/bin/brew install gettext

          # Install arm64 packages
          brew install automake asciidoc xmlto docbook
          brew link --force gettext

          # Make universal gettext library
          lipo -create -output libintl.a /usr/local/opt/gettext/lib/libintl.a /opt/homebrew/opt/gettext/lib/libintl.a

      - name: Set up signing/notarization infrastructure
        env:
          A1: ${{ secrets.APPLICATION_CERTIFICATE_BASE64 }}
          A2: ${{ secrets.APPLICATION_CERTIFICATE_PASSWORD }}
          I1: ${{ secrets.INSTALLER_CERTIFICATE_BASE64 }}
          I2: ${{ secrets.INSTALLER_CERTIFICATE_PASSWORD }}
          N1: ${{ secrets.APPLE_TEAM_ID }}
          N2: ${{ secrets.APPLE_DEVELOPER_ID }}
          N3: ${{ secrets.APPLE_DEVELOPER_PASSWORD }}
          N4: ${{ secrets.APPLE_KEYCHAIN_PROFILE }}
        run: |
          echo "Setting up signing certificates"
          security create-keychain -p pwd $RUNNER_TEMP/buildagent.keychain
          security default-keychain -s $RUNNER_TEMP/buildagent.keychain
          security unlock-keychain -p pwd $RUNNER_TEMP/buildagent.keychain
          # Prevent re-locking
          security set-keychain-settings $RUNNER_TEMP/buildagent.keychain

          echo "$A1" | base64 -D > $RUNNER_TEMP/cert.p12
          security import $RUNNER_TEMP/cert.p12 \
            -k $RUNNER_TEMP/buildagent.keychain \
            -P "$A2" \
            -T /usr/bin/codesign
          security set-key-partition-list \
            -S apple-tool:,apple:,codesign: \
            -s -k pwd \
            $RUNNER_TEMP/buildagent.keychain

          echo "$I1" | base64 -D > $RUNNER_TEMP/cert.p12
          security import $RUNNER_TEMP/cert.p12 \
            -k $RUNNER_TEMP/buildagent.keychain \
            -P "$I2" \
            -T /usr/bin/pkgbuild
          security set-key-partition-list \
            -S apple-tool:,apple:,pkgbuild: \
            -s -k pwd \
            $RUNNER_TEMP/buildagent.keychain

          echo "Setting up notarytool"
          xcrun notarytool store-credentials \
            --team-id "$N1" \
            --apple-id "$N2" \
            --password "$N3" \
            "$N4"

      - name: Build, sign, and notarize artifacts
        env:
          A3: ${{ secrets.APPLE_APPLICATION_SIGNING_IDENTITY }}
          I3: ${{ secrets.APPLE_INSTALLER_SIGNING_IDENTITY }}
          N4: ${{ secrets.APPLE_KEYCHAIN_PROFILE }}
        run: |
          die () {
            echo "$*" >&2
            exit 1
          }

          # Trace execution, stop on error
          set -ex

          # Write to "version" file to force match with trigger payload version
          echo "${{ needs.prereqs.outputs.tag_version }}" >>git/version

          # Configure universal build
          cat >git/config.mak <<EOF
          # Create universal binaries. HOST_CPU is a bit of a lie and only
          # used in 'git version --build-options'.  We'll fix that in code.
          HOST_CPU = universal
          BASIC_CFLAGS += -arch arm64 -arch x86_64
          EOF

          # Configure the Git build to pick up gettext
          homebrew_prefix="$(brew --prefix)"
          cat >>git/config.mak <<EOF
          CFLAGS = -I$homebrew_prefix/include -I/usr/local/opt/gettext/include
          LDFLAGS = -L"$(pwd)"
          EOF

          # Configure the Git to use the OS supplied libcurl.
          cat >>git/config.mak <<EOF
          CURL_LDFLAGS := -lcurl
          CURL_CONFIG := /usr/bin/true
          EOF

          # Avoid even building the dashed built-ins; Those should be hard-linked
          # copies of the `git` executable but would end up as actual copies instead,
          # bloating the size of the `.dmg` indecently.
          echo 'SKIP_DASHED_BUILT_INS = YabbaDabbaDoo' >>git/config.mak

          # To make use of the catalogs...
          export XML_CATALOG_FILES=$homebrew_prefix/etc/xml/catalog

          make -C git -j$(sysctl -n hw.physicalcpu) GIT-VERSION-FILE dist dist-doc

          export GIT_BUILT_FROM_COMMIT=$(gunzip -c git/git-$VERSION.tar.gz | git get-tar-commit-id) ||
            die "Could not determine commit for build"

          # Extract tarballs
          mkdir payload manpages
          tar -xvf git/git-$VERSION.tar.gz -C payload
          tar -xvf git/git-manpages-$VERSION.tar.gz -C manpages

          # Lay out payload
          cp git/config.mak payload/git-$VERSION/config.mak
          make -C git/.github/macos-installer V=1 payload

          # Codesign payload
          cp -R stage/git-universal-$VERSION/ \
            git/.github/macos-installer/build-artifacts
          make -C git/.github/macos-installer V=1 codesign \
            APPLE_APP_IDENTITY="$A3" || die "Creating signed payload failed"

          # Build and sign pkg
          make -C git/.github/macos-installer V=1 pkg \
            APPLE_INSTALLER_IDENTITY="$I3" \
            || die "Creating signed pkg failed"

          # Notarize pkg
          make -C git/.github/macos-installer V=1 notarize \
            APPLE_INSTALLER_IDENTITY="$I3" APPLE_KEYCHAIN_PROFILE="$N4" \
            || die "Creating signed and notarized pkg failed"

          # Create DMG
          make -C git/.github/macos-installer V=1 image || die "Creating DMG failed"

          # Move all artifacts into top-level directory
          mv git/.github/macos-installer/disk-image/*.pkg git/.github/macos-installer/

      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: macos-artifacts
          path: |
            git/.github/macos-installer/*.dmg
            git/.github/macos-installer/*.pkg
  # End build and sign Mac OSX installers

  # Build and sign Debian package
  create-linux-artifacts:
    runs-on: ubuntu-latest
    needs: prereqs
    environment: release
    steps:
      - name: Install git dependencies
        run: |
          set -ex
          sudo apt-get update -q
          sudo apt-get install -y -q --no-install-recommends gettext libcurl4-gnutls-dev libpcre3-dev asciidoc xmlto

      - name: Clone git
        uses: actions/checkout@v3
        with:
          path: git

      - name: Build and create Debian package
        run: |
          set -ex

          die () {
              echo "$*" >&2
              exit 1
          }

          echo "${{ needs.prereqs.outputs.tag_version }}" >>git/version
          make -C git GIT-VERSION-FILE

          VERSION="${{ needs.prereqs.outputs.tag_version }}"

          ARCH="$(dpkg-architecture -q DEB_HOST_ARCH)"
          if test -z "$ARCH"; then
            die "Could not determine host architecture!"
          fi

          PKGNAME="microsoft-git_$VERSION"
          PKGDIR="$(dirname $(pwd))/$PKGNAME"

          rm -rf "$PKGDIR"
          mkdir -p "$PKGDIR"

          DESTDIR="$PKGDIR" make -C git -j5 V=1 DEVELOPER=1 \
            USE_LIBPCRE=1 \
            NO_CROSS_DIRECTORY_HARDLINKS=1 \
            ASCIIDOC8=1 ASCIIDOC_NO_ROFF=1 \
            ASCIIDOC='TZ=UTC asciidoc' \
            prefix=/usr/local \
            gitexecdir=/usr/local/lib/git-core \
            libexecdir=/usr/local/lib/git-core \
            htmldir=/usr/local/share/doc/git/html \
            install install-doc install-html

          cd ..
          mkdir "$PKGNAME/DEBIAN"

          # Based on https://packages.ubuntu.com/xenial/vcs/git
          cat >"$PKGNAME/DEBIAN/control" <<EOF
          Package: microsoft-git
          Version: $VERSION
          Section: vcs
          Priority: optional
          Architecture: $ARCH
          Depends: libcurl3-gnutls, liberror-perl, libexpat1, libpcre2-8-0, perl, perl-modules, zlib1g
          Maintainer: Git Fundamentals <git-fundamentals@github.com>
          Description: Git client built from the https://github.com/microsoft/git repository,
            specialized in supporting monorepo scenarios. Includes the Scalar CLI.
          EOF

          dpkg-deb -Zxz --build "$PKGNAME"
          # Move Debian package for later artifact upload
          mv "$PKGNAME.deb" "$GITHUB_WORKSPACE"

      - name: Log into Azure
        uses: azure/login@v1
        with:
          client-id: ${{ secrets.AZURE_CLIENT_ID }}
          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}

      - name: Prepare for GPG signing
        env:
          AZURE_VAULT: ${{ secrets.AZURE_VAULT }}
          GPG_KEY_SECRET_NAME: ${{ secrets.GPG_KEY_SECRET_NAME }}
          GPG_PASSPHRASE_SECRET_NAME: ${{ secrets.GPG_PASSPHRASE_SECRET_NAME }}
          GPG_KEYGRIP_SECRET_NAME: ${{ secrets.GPG_KEYGRIP_SECRET_NAME }}
        run: |
          # Install debsigs
          sudo apt install debsigs

          # Download GPG key, passphrase, and keygrip from Azure Key Vault
          key=$(az keyvault secret show --name $GPG_KEY_SECRET_NAME --vault-name $AZURE_VAULT --query "value")
          passphrase=$(az keyvault secret show --name $GPG_PASSPHRASE_SECRET_NAME --vault-name $AZURE_VAULT --query "value")
          keygrip=$(az keyvault secret show --name $GPG_KEYGRIP_SECRET_NAME --vault-name $AZURE_VAULT --query "value")

          # Remove quotes from downloaded values
          key=$(sed -e 's/^"//' -e 's/"$//' <<<"$key")
          passphrase=$(sed -e 's/^"//' -e 's/"$//' <<<"$passphrase")
          keygrip=$(sed -e 's/^"//' -e 's/"$//' <<<"$keygrip")

          # Import GPG key
          echo "$key" | base64 -d | gpg --import --no-tty --batch --yes

          # Configure GPG
          echo "allow-preset-passphrase" > ~/.gnupg/gpg-agent.conf
          gpg-connect-agent RELOADAGENT /bye
          /usr/lib/gnupg2/gpg-preset-passphrase --preset "$keygrip" <<<"$passphrase"

      - name: Sign Debian package
        run: |
          # Sign Debian package
          version="${{ needs.prereqs.outputs.tag_version }}"
          debsigs --sign=origin --verify --check microsoft-git_"$version".deb

      - name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: linux-artifacts
          path: |
            *.deb
  # End build and sign Debian package

  # Validate installers
  validate-installers:
    name: Validate installers
    strategy:
      matrix:
        component:
          - os: ubuntu-latest
            artifact: linux-artifacts
            command: git
          - os: macos-latest-xl-arm64
            artifact: macos-artifacts
            command: git
          - os: macos-latest
            artifact: macos-artifacts
            command: git
          - os: windows-latest
            artifact: win-installer-x86_64
            command: $PROGRAMFILES\Git\cmd\git.exe
    runs-on: ${{ matrix.component.os }}
    needs: [prereqs, windows_artifacts, create-macos-artifacts, create-linux-artifacts]
    steps:
      - name: Download artifacts
        uses: actions/download-artifact@v3
        with:
          name: ${{ matrix.component.artifact }}

      - name: Install Windows
        if: contains(matrix.component.os, 'windows')
        shell: pwsh
        run: |
          $exePath = Get-ChildItem -Path ./*.exe | %{$_.FullName}
          Start-Process -Wait -FilePath "$exePath" -ArgumentList "/SILENT /VERYSILENT /NORESTART /SUPPRESSMSGBOXES /ALLOWDOWNGRADE=1"

      - name: Install Linux
        if: contains(matrix.component.os, 'ubuntu')
        run: |
          debpath=$(find ./*.deb)
          sudo apt install $debpath

      - name: Install macOS
        if: contains(matrix.component.os, 'macos')
        run: |
          # avoid letting Homebrew's `git` in `/opt/homebrew/bin` override `/usr/local/bin/git`
          arch="$(uname -m)"
          test arm64 != "$arch" ||
          brew uninstall git

          pkgpath=$(find ./*universal*.pkg)
          sudo installer -pkg $pkgpath -target /

      - name: Validate
        shell: bash
        run: |
          "${{ matrix.component.command }}" --version | sed 's/git version //' >actual
          echo ${{ needs.prereqs.outputs.tag_version }} >expect
          cmp expect actual || exit 1

      - name: Validate universal binary CPU architecture
        if: contains(matrix.component.os, 'macos')
        shell: bash
        run: |
          set -ex
          git version --build-options >actual
          cat actual
          grep "cpu: $(uname -m)" actual
  # End validate installers

  create-github-release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: write # required for Azure login via OIDC
    needs:
      - validate-installers
      - create-linux-artifacts
      - create-macos-artifacts
      - windows_artifacts
      - prereqs
    env:
      AZURE_VAULT: ${{ secrets.AZURE_VAULT }}
      GPG_PUBLIC_KEY_SECRET_NAME: ${{ secrets.GPG_PUBLIC_KEY_SECRET_NAME }}
    environment: release
    if: |
      success() ||
        (needs.create-linux-artifacts.result == 'skipped' &&
        needs.create-macos-artifacts.result == 'success' &&
        needs.windows_artifacts.result == 'success')
    steps:
      - name: Download Windows portable installer
        uses: actions/download-artifact@v3
        with:
          name: win-portable-x86_64
          path: win-portable-x86_64

      - name: Download Windows x86_64 installer
        uses: actions/download-artifact@v3
        with:
          name: win-installer-x86_64
          path: win-installer-x86_64

      - name: Download macOS artifacts
        uses: actions/download-artifact@v3
        with:
          name: macos-artifacts
          path: macos-artifacts

      - name: Download Debian package
        uses: actions/download-artifact@v3
        with:
          name: linux-artifacts
          path: deb-package

      - name: Log into Azure
        uses: azure/login@v1
        with:
          client-id: ${{ secrets.AZURE_CLIENT_ID }}
          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}

      - name: Download GPG public key signature file
        run: |
          az keyvault secret show --name "$GPG_PUBLIC_KEY_SECRET_NAME" \
            --vault-name "$AZURE_VAULT" --query "value" \
            | sed -e 's/^"//' -e 's/"$//' | base64 -d >msft-git-public.asc
          mv msft-git-public.asc deb-package

      - uses: actions/github-script@v6
        with:
          script: |
            const fs = require('fs');
            const path = require('path');

            var releaseMetadata = {
              owner: context.repo.owner,
              repo: context.repo.repo
            };

            // Create the release
            var tagName = "${{ needs.prereqs.outputs.tag_name }}";
            var createdRelease = await github.rest.repos.createRelease({
              ...releaseMetadata,
              draft: true,
              tag_name: tagName,
              name: tagName
            });
            releaseMetadata.release_id = createdRelease.data.id;

            // Uploads contents of directory to the release created above
            async function uploadDirectoryToRelease(directory, includeExtensions=[]) {
              return fs.promises.readdir(directory)
                .then(async(files) => Promise.all(
                  files.filter(file => {
                    return includeExtensions.length==0 || includeExtensions.includes(path.extname(file).toLowerCase());
                  })
                  .map(async (file) => {
                    var filePath = path.join(directory, file);
                    github.rest.repos.uploadReleaseAsset({
                      ...releaseMetadata,
                      name: file,
                      headers: {
                        "content-length": (await fs.promises.stat(filePath)).size
                      },
                      data: fs.createReadStream(filePath)
                    });
                  }))
                );
            }

            await Promise.all([
              // Upload Windows artifacts
              uploadDirectoryToRelease('win-installer-x86_64', ['.exe']),
              uploadDirectoryToRelease('win-portable-x86_64', ['.exe']),

              // Upload Mac artifacts
              uploadDirectoryToRelease('macos-artifacts'),

              // Upload Ubuntu artifacts
              uploadDirectoryToRelease('deb-package')
            ]);